Gas-producer.



J. 0. E. TROTZ.

GAS PRODUCER.

APPLIGATION FILED JAN. so, 1905.

968,000. Patenteii Aug. 23, 1910. 2 sums-sum 1.

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J. 0. E. TROTZ.

GAS PRODUCER.

APPLIOATION FILED JAR. 30, 1905.

Patent ed Aug. 23, 1910.

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JOHAN 0. E. TROTZ, 0F WORCESTER, MASSACHUSETTS.

GASrPRODUGER.

Specification of Letters Patent.

Application filed January 30, 1905. Serial No. 243,178.

To all whom itnmry concern: I

Be it known that I, JOHAN O. E. Tno'rz, a citizen of Sweden, residing atWorcester, in the county of lVorcester and Commonwealth ofMassachusetts, have invented a new and useful Improvement inGas-Producers, of which the following is a specification accompanied bydrawings, forming a part of the same, in which Figure 1 is a verticalcentral sectional view of a gas producer embodying my invention. Fig. 2is a sectional view on line 2.2, Fig. 1, and Fig. 3 is a top view of thegas escape pipes from the gas producing chamber.

Similar reference letters and figures refer to similar parts in thediiferent views.

My invention relates to means for producing gas to be used in furnaces,gas on gines, or for fuel for general purposes; and comprises means forremoving most of the volatile constituents from the coal in a chamber inorder to sufficiently coke the coal to prevent it from stickingtogether, transferring the coked coal to a second chamber where thecombustion of coal is continued by admitting a current of air and steamand conducting the volatile constituents of the coal which have beenremoved in the first chamber through the incandescent mass of coal inthe second chamber.

Referring to the accompanying drawings 1 denotes the coking chamber inwhich the volatile constituents of the coal are removed by theapplication of heat and 2 the second or gas producing chamber,preferably placed at a lower level in order that gravity may aid in thetransfer of coal from the first to the second chamber. chamber 1 througha pipe 3 which terminates at its upper end in a hopper of the usualconstruction, not shown. Air, preferably accompanied by steam, isintroduced into chamber 1 through twyers 4. Near the top ofchamber 1pipes 5 lead downward and enter the chamber 2 at 6, 6, and form the onlyexit from chamber 1 for the volatile products of the coal. At the bottomof chamber 1 is a hollow sliding plate 7 in which water circulatesthrough pipes 8, 8.. The plate 7 is further provided against theinjurious effects of heat by being provided with a fire brick covering9. Supported upon a bracket 10 at, the side of the furnace is a chamber11 to receive the plate 7 when it is withdrawn from the coking chamberCoal is admitted to 1 to allow the incandescent mass of coal to restupon the horizontal bottom 12 of the chamber. Space, on opposite sidesof the chamber 1, for the reciprocating movement of the plate 7 isprovided between hollow rectangular water pipes 13 and 14. Pivotallyattached to the side Wall of the chamber 1 is an inclined plate 15 whoselower edge rests upon the top of the plate 7, thereby acting as ascraper and preventing the conveyance of ashes or fuel into the chamber11 during the withdrawal of the plate 7.

The gas producing chamber 2 extends at 16 above the lower end of thecoking chamber 1, so that a communication is established between the twochambers by the withdrawal of the plate 7. The return movement of theplate 7 will push any fuel in its path forward into the extension 16from which it will fall by gravity. into the gas producing chamber 2.The relative position of the extension 16 of the gas producing chamberand the openings 6, 6, is so arranged that a space 6 of the gasproducing chamber 2 immediately below the openings 6, 6, will remainclear of fuel, thereby affording an opportunity for the free entrance ofthe volatile constituents of the coal which have been conducted throughthe pipes 5 from the coking chamber 1. The lower end of the gasproducing chamber 2 is provided on one side with an inclined grate 17provided with holes 18 for the admission of air to the incandescent massof coal in the gas producing chamber. Air, prefer ably mixed with steam,is supplied to the gas producing chamber through a pipe 19 by which theprocess of combustion in the chamber 2 is continued, the ashes fallingthrough a central opening into an ash box 20. On the opposite side ofthe gas producing chamber from the free space 6, the fixed gas producedin the chamber is removed through one or more pipes 21.

The method of operation of my improved gas producer is as follows :Afire is kindled in chamber 1 to which coal is fed by the pipe 3 and itscombustion is assisted by a blast of air through the twyers 4. hen thechamber 1 has become filled with coal and a considerable portion of ithas become incandescent, the plate 7 is given a reciprocating movementby any suitable means, not shown, thereby allowing the mass ofincandescent coal to rest upon the bottom wall 12 of the chamber, sothat the Patented Aug. 23, 1910.

return movement of the plate 7 will push the coal lying in its pathforward into the upward extension 16 of the gas producing chamber 2, andthis operation is repeated as often as the mass of coal at the bottom ofthe chamber 1 becomes sufficiently coked to prevent it from stickingtogether, and the removal of coal by the reciprocating movement of theplate 7 is supplied by fresh coal through the pipe 3. From the extension16 coal falls by gravity into the gas producing chamber 2 until thelatter has become filled. Any tendency of' the coal to stick together inthe upper portion of the coking chamber 1 may be prevented by pokersinserted through the openings 22 and any conglomerate mass of coalformed in the lower portion of the coking chamber 1 will be broken apartby the reciprocating. movement of the plate 7. As the coal transferredto the gas producing chamber 2 has become sufliciently coked to preventits sticking together, poking or otherwise disturbing the mass of coalin the gas producing chamber 2 is unnecessary, and the combustion ofcoal in the gas producing chamber proceeds uniformly and uninterruptedlyby the admission of air and steam through the pipe 19 and openings 18inthe grate 17. During the combustion of coal in the gas producing chamber2 the volatile products which are given off in the coking chamber 1 areconducted through the pipes 5 into the open space 6 from which they passthrough the mass of incandescent coal in the gas producing chamber 2 tothe exit pipe 21, causing the volatile products to be decomposed andform a fixed gas which is intimately intermingled with the fixed gasproduced in the chamber 2, thereby rendering the quality of the gasuniform and obviating the deposit of soot in the pipe 21. The inclinedplate 17 has its openings 18 for the passage of air preferably increasedin number toward the bottom of the plate and they are protected by aseries of curved longitudinal ribs 23 which prevent the access of ashesto the openings 18. The gas escape pipe 21 communicates with ahorizontal drum 25,which is connected with the gas producing chamber 2by a multiplicity of pipes 24:, 24, in order to render the withdrawal ofgas from different parts of the chamber more uniform, and also efiect abetter distribution of the volatile constituents of the coal throughoutthe mass of incandescent coal in the gas producing chamber.

What I claim as my invention and desire to secure by Letters Patentis 1. In a gas producer, the combination with a gas producing chamberand means for admitting air thereto, of a combustion chamber above saidgas producing chamber normally closed to communication with and in adifierent vertical plane from said gas producing chamber, means foradmitting coal to said combustion chamber, twyers communicating withsaid combustion chamber at a point above the plane of the bottom of saidcombustion chamber, thereby supplying air to a portion only of the fuelin said combustion chamber, means for transferring by a lateral movementcoal rendered incandescent by its combustion in ,said combustion chamberto said gas producing chamber, and means for conducting the fixed gasfrom said as producing chamber without contact with said combustionchamber or the fuel therein.

2. In a gas producer, the combination with a combustion chamber with anopening in its top for the admission of coal and means for dischargingcoke from the bottom of said chamber by a lateral movement, of a gasproducing chamber below and in a different vertical plane from saidcombustion chamber, a vertical extension from the top of said gasproducing chamber arranged to receive coke from said combustion chamberand conduct it into said gas producing chamber, with the top of said gasproducing chamber arranged at different angles with its walls, on oneside of said extension greater and on the other side less than the angleof repose of the coal in said gas producing chamber, thereby leaving aspace at one side of said gas producing chamber above the coal, meansfor conducting the products of combustion from the top of saidcombustion chamber into said space, and means for conducting the fixedgas from the gas producing chamber on the opposite side from said space.

3. In a gas producer, the combination with a combustion chamber with anopening at its top for the admission of coal and an opening at thebottom for the discharge of coke, of a gas producing chamber, a smallerextension from the top of said gas producing chamber, arranged toreceive coke from said discharge 0 ening and conduct it into said gaspro ucing chamber, with the top of said gas producing cham ber at oneside of said extension arranged above the plane of the top of the cokein said gas producing chamber, and with the top of said chamber on theother side of said extension in contact with the contents of saidchamber.

4:. The combination with a gas producing chamber, of an independentvertical combustion chamber above said gas producing chamber and in adifi'erent vertical plane, means for supplying coal to the top of saidcombustion chamber, means communicating with said combustion chambersubstantially midway of said chamber for supplying air thereto, meansfor transferring coal by a lateral movement from the bottom of saidcombustion chamber to the top of said gas producing chamber, and meansfor admitting air to said gas producing chamber.

5. In a gas producer, the combination with a gas producing chamber, of acombustion chamber distinct from said gas producing chamber, means foradmitting coal to said combustion chamber, twyers for admitting air tosaid combustion chamber arranged substantially in the horizontal planeof the center of said combustion chamber, means for conducting thevolatile products of combustion of the coal in said combustion chamberto one side of said gas producing chamber, means for transferring cokedcoal from said combustion chamber to said gas producing chamber, meansfor admitting air to said gas producing chamber, and means forconducting the fixed gas from the other side of said gas producingchamber.

6. In a gas producer, the combination with a gas producing chamberhaving an opening at its top for the admission of coal and an opening atits bottom for the discharge of ashes, of an inclined plate at thebottom of said chamber for deflecting the ashes to said dischargeopening, said plate having a series of openings for the passage of air,and a series of ribs preventing the access of ashes to said openings.

7. In a gas producer, the combination with a gas producing chamber, of acombustion chamber above said gas producing chamber, means for admittingcoal to said combustion chamber, means for admitting air to saidcombustion chamber, means for transferring by a lateral movement theincandescent coal from the bottom of said combustion chamber to the topof said gas producing chamber, a pipe connecting the top of saidcombustion chamber with the top of said gas producing chamber at oneside thereof, and means for I conducting the fixed gas from the otherside of said gas producing chamber below the top of said chamber.

8. In a gas producer, the combination with a gas producing chamber, of aseparate combustion chamber above said gas producing chamber for cokingthe coal fed to said gas producing chamber, means for feeding by alateral movement the incandescent coal from the bottom of said cokingchamber to one side of the top of said gas producing'chamber, a pipeconnecting the top of said coking chamber with an open space at theother side of the top of said gas producing chamber, and means forwithdrawing the fixed gas from the side of said gas producing chamberopposite to said open space and below the top of said gas producingchamber.

9. In a gas producer, the combination with a gas producing chamber, of aseparate combustion chamber above and at one side of said gas producingchamber for coking the coal to be fed to said gas producing chamber,means for feeding by a lateral movement incandescent coal from thebottom of said coking chamber to one side of the top of said gasproducing chamber, with said gas producing chamber so constructed as toprovide upon the opposite side of said chamber from the admissionopening for coal an open space which will remain clear of coal, a pipeconnecting the top of said coking chamber with said open space, andmeans for Withdrawing the fixed gas from said gas producing chamber fromthe side opposite to said open space.

JOHAN O. E. TROTZ. Witnesses:

RUFUS B. FOWLER, PENELOPE CoMBERBAoH.

